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Issue 6, 2015
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Simultaneous spin-coating and solvent annealing: manipulating the active layer morphology to a power conversion efficiency of 9.6% in polymer solar cells

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Abstract

We developed a simultaneous spin-coating/solvent-annealing process and demonstrated morphology optimization for PTB7 based organic photovoltaics. This novel processing method enhances the edge-on crystalline content in thin films and induces the formation of weak PCBM aggregates. As a result, the efficiency of polymer solar cells increased from 9.2% to a certified high efficiency of 9.61%, owing to an enhanced short-circuit current (Jsc, 18.4 mA cm−2vs. 17. 5 mA cm−2) and an improved fill factor.

Graphical abstract: Simultaneous spin-coating and solvent annealing: manipulating the active layer morphology to a power conversion efficiency of 9.6% in polymer solar cells

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Publication details

The article was received on 14 May 2015, accepted on 20 Aug 2015 and first published on 20 Aug 2015


Article type: Communication
DOI: 10.1039/C5MH00076A
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Mater. Horiz., 2015,2, 592-597

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    Simultaneous spin-coating and solvent annealing: manipulating the active layer morphology to a power conversion efficiency of 9.6% in polymer solar cells

    Z. He, F. Liu, C. Wang, J. Chen, L. He, D. Nordlund, H. Wu, T. P. Russell and Y. Cao, Mater. Horiz., 2015, 2, 592
    DOI: 10.1039/C5MH00076A

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